Isomeric structures, bispidine ligands

Figure 18. Plots of the structures of bispidine-metal complexes with the tetradentate ligand 14 (a) with two sterically and electronically different sites for substrate coordination, and with the isomeric pentadentate ligands 24 (b) and 28 (c), which have one of those sites blocked by a pendant pyridine.

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